Weather: More cold, maybe snow on Friday

The National Weather Service calls for a high of only 33 degrees Tuesday in Seattle with a low Tuesday night of 23.

Tuesday morning was freezing. A sample of lows in the area: 21 degrees at Boeing Field and Sea-Tac Airport, 20 degrees in Tacoma and Everett, 12 degrees in Bremerton and 7 degrees in Olympia.

The forecast calls for slight warming trend the rest of the week, going from a high of 34 on Wednesday to 39 on Friday.

The good news is that skies will remain sunny until Friday, when warmer temperatures and clouds may bring rain or snow.

But forecasters say predicting snow is difficult. Here’s what they say:

Any confidence in details is low. Situation bears watching. With a deep enough cold air mass in place and some overrunning moisture, some snow is possible before we transition to a milder, wetter pattern next week.